Finding the Fourth Proportional to 321,120.21, 481,747.95 and 121,436.18
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Solution
The fourth proportional to 321,120.21, 481,747.95 and 121,436.18 is: 182,179.85
Step by Step Solution
- Step 1: Write the proportion equation
321,120.21 : 481,747.95 = 121,436.18 : x - Step 2: Convert to fraction form
321,120.21/481,747.95 = 121,436.18/x - Step 3: Cross multiply
321,120.21x = 481,747.95 × 121,436.18 - Step 4: Simplify right side
321,120.21x = 58,501,630,770.83 - Step 5: Solve for x
x = 58,501,630,770.83/321,120.21 - Step 6: Final answer
x = 182,179.85
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.